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Question Help! Friends dead Alienware X51 R3

chrisjames61

Senior member
Dec 31, 2013
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My friend brought me his dead machine. The following parts have tested good. GTX 970, SSD, mechanical hard drive and the DDR4. The following items I could not test. CPU as I don't have a LGA 1151 board, motherboard as I don't have another cpu to swap in, proprietary power brick also. My assumption is the board is more than likely the culprit. I think the power brick is fine because it powers on and the hard drive activity light sporadically works when I try to boot it up. No video signal whatsoever. 99.9% the cpu is good I would think. I am pretty sure the cpu is an I7-6700. My plan would be to get him a micro-atx board and build him a real pc. Anyone have any suggestions?
 

NTMBK

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Nov 14, 2011
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If it's the same as the x51 R2, the power brick connects to a power board internally with a normal ATX power connector. So you could disconnect the entire power board and hook up a separate power supply to test.

EDIT: I take it back, on the R3 the power supply is integrated into the motherboard.
 
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aigomorla

Cases and Cooling Mod PC Gaming Mod Elite Member
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I don't know much about that system, but i do know if you want to swap boards with those core components, the board you are looking for is a Z170.
 
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chrisjames61

Senior member
Dec 31, 2013
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If it's the same as the x51 R2, the power brick connects to a power board internally with a normal ATX power connector. So you could disconnect the entire power board and hook up a separate power supply to test.

EDIT: I take it back, on the R3 the power supply is integrated into the motherboard.
Yes, I saw that when I took it a apart. But thanks anyway. I see there are LGA 1151 boards and LGA 1151 (300) series boards. I guess I would need a Z270 board all of which have been long discontinued.
 
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Furious_Styles

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Jan 17, 2019
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Yes, I saw that when I took it a apart. But thanks anyway. I see there are LGA 1151 boards and LGA 1151 (300) series boards. I guess I would need a Z270 board all of which have been long discontinued.
The LGA 1151 is confusing, you want to make sure you have the 6th/7th (Z170/Z270)gen or the 8th/9th (Z370/390) gen, because they are not compatible.
 

SamMaster

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Jun 26, 2010
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From personal experience, having fixed Dell systems for almost 15 years, I have a tendency to point towards the motherboard. It is very rare to have a dead CPU, though I once had a six month period where CPUs were defective often.

In the worse case, and I have seen it happen a handful of times, one of the three components is causing damage to the other two, but that's a one in a million chance.

TLDR: look at the motherboard first, then PSU, the CPU last.
 
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DAPUNISHER

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My plan would be to get him a micro-atx board and build him a real pc. Anyone have any suggestions?
Stick to the plan. PSU, board, and case, will probably cost about what he paid in sales tax alone, on that Alienware. :p
 

chrisjames61

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Dec 31, 2013
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Stick to the plan. PSU, board, and case, will probably cost about what he paid in sales tax alone, on that Alienware. :p
Yeah, it was expensive. To me the whole premise is stupid. Mid sized pc with a huge, bulky, ugly power brick to boot. How is that any better than having say a mini itx or even micro atx pc with industry standard parts that can actually be fixed when it breaks? I am not a gamer but the power brick is rated at 330 watts and he had a GTX 970 in it. The I7 6700 I think is a 65 TDP cpu. Isn't 330 watts kind of a weak psu with that gpu?
 
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